Wagon brake



March 18 1.924.

W. Z. WlLLlS WAGON BRAKE Filed Dec. 11 1922 2 Sheets-Sheet 1 \M. ivm..mlm.

Patented Mar. is, reza.

WILLIAM Z. WILLIS, OF OAKMAN, ALABAMA, ASSIGNR OF FORTYNINE ONE-HUN-.DBEDTHS TO CLAUDE D. RQBERTS, OF OAKMAN, ALABAMA. Y

WAGON BRAKE.

Application led December 11, 1922. Serial No. 606,153.

To all whom t may concern:

Be it known that I, WILLIAM Z. WILLIS, a citizen of theUnited States,residing at Oakman, in the county of lValker and State of Alabama, haveinvented certain new and useful Improvements in TWagon Brakes, of whichthe following is a specification. y

This invention relates to vehicle brakes, more particularly to thatclass of brakes wherein the momentum of the vvehicle,.especially of aloaded vehicle when running down a grade, automatically applies a brake,and with means provided for manually applying the brake independently ofthe load operative means.

With these and other objects in view, the invention consists in certainnovel features of construction as hereinafter shown and described andthen specically pointed out in the claim, and in thedrawingsillustrative of the preferred embodiment of the invention- Figure 1 is aplan view of the conventional running gear of a wagon with the improvedbrake apparatus apptlied.

Fig. 2 is a side elevation partly Vin section of the parts shown in Fig.1.V

Fig. 3 is a transverse section on the line 3-3 of Fig. 2.

The improved apparatus may be adaptedv without material structuralchange to the running gear of wagons 0f various forms, but for thepurpose of illustration is shown applied to a conventional running gearin which 10 represents the forward axle, 11 the forward bearing wheels,12 the forward stationary bolster, 13 the forward swinging bolster, 14the forward hounds, 15 the rear portion of the draft tongue, 16 the rearaxle with the rear carrying wheels 17, the rear stationary bolster 18,the rear hounds 19, and the reach 20, the forward ends of the rearhounds being connected by plates 19l above and below the reach with aguide pin 192 extending through the plates and the reach.

Attached to the under face of the reach at its forward portion is aplate 21 extending at its forward end in advance of the reach andperforated to receive the king pin 22, the latter extending through themovable bolster 13, the stationary bolster 12 and the forward laxle 10,as shown.

The reach 20 is slidable at its rear end between the rear axle 16 andthe rear lstationary bolster 18 in the ordinary manner.

Bearing over the rear hounds 19 and bolted or otherwise secured theretois a brake Plates 29 and 30 are attached to the 11p-- per and lowerfaces of the forward hounds and extendtransversely of the tongue andcooperate with the forward hounds to hold the tongue from verticaldisplacement while leaving it free to move longitudinally within .therange of the slot 27.

Slidable upon the upper face of thereach 20 and beneaththe upperconnecting plate .19 is an operating member in the form ofV a flat plate31V having a longitudinal slot:

32 through which the king pin'22 extends and with avsegmentalforwardvterminal 33, and terminating just in advance of the rear axle16. The member 31 is slotted as shown at 31 where it passes beneath theupper plate 19 to receive the pin 192, as shown in Fig. 2. By this meansthe member 20 is guided and prevented from lateral displacement.

Attached to the rear end of the tongue 15 is an upwardly and downwardlydirected stop plate'34 in position to be engaged by the segmental member33, when the motive power, for instance the draft animals coupled to thetongue, is backed, or the rear portion of the vehicle moves forwardly,as hereafter explained.

Supported beneath the rear hounds and transversely thereof are two rockshafts 35 and 36, and attached to the rock shaft 35 and extendingupwardly at each side of the reach 20 and the operating member 31, arearms 37, and extending through the arms above the member 31 is acoupling pin 38, the latter coupled at 39 to the member 31.

RodsV 40 are connected at their ends respectively to the brake beam 25and to the arms 37, so that the oscillation of the shaft 35 will applythe brake shoes to the real'- wheels. Y

By this arrangement so long as the draft power is moving forwardly andstrain thereby applied to thedraft tongue, the latter will be in theposition shown in Figures l and 2 with the brakeY beam and shoes ininoperative position, thenl if the vehicle starts down a grade, or isbacked, the draft tongue will be moved rearwardly and cause the plate 34to engage the segmental portion 33 of the operating member 31 and movethe arms 37 rearwardly and eauso lthea-ods 30 to draw the brake beam andits shoes rearwardly and apply the brake to the rear wheels, and thuscheek the forward motion of the'vehicle.

When the vehicle reaches level ground, the forward movement of themotive power draws the tongue foriifardly and relieves the vrearwardstra-in from the member 3l and thus correspondingly releases theAttached to the rock shaft 35 is avkcam arm 4:1, and att'aehedto therookl shaft 36 is another cam arm 42 and extending from the rock shaft36 is a 'pull lever 43 to which a' pall rod 44 sattaehed, the latteradapt ed to lead to a point convenient to the driver 'on the seat of thevehicle, not shown.

By this arrangement the rock shaft 35 may be manually oscillated toapply the brake independently of the atomatically operated mechanismbefore described.

The improved devicev is simple in construction, can be appliedwithout/material structural 'change tol Wagons of various forms andsizes.

The ycombination with a vehicle running I gear including the forward andrear a`X-.

les, the carrier Wheels, and a reach niember, of an operating membermovable longitudinally of the reach, forward and rearward rock shafts inspaced relation and mounted for oscillation on, the running gear, armscarried by one ofthe rock shafts and coupled to the operating member, abrake beam carrying brake shoes, cou'pling means between said arms andbrake beams, cooperating cam arins carried respectively by said rockshaftsmeansunder the eontr'Ol Of the driver 0f the Vliiele I perating`said forward rock` shaft-,- and a draft tongue slidably coupled te therunning gear and engaging' the operating member by the rearward movementof the draft 'g'e l th' IWL. VC'IHB'H, 0f the rear ale.

ni testimeny whereof, i am my signa ture hereto.

his WILLIAM- Z. WILLIS.

Witness: Y r mark O. OHRN.

